Add '--use-build-count' option.

Add '--use-build-count' option.

* Gbs has a mistake while building multiple packages which have dependence.
* For example, to build package A and B by gbs, and package B depends on package A.
  - Build package A, and rpm of package A can be found in gbs build dir.
  - Build package B, the package A will be installed while building.
  - Modify package A and rebuild it.
  - Rebuild package B, package A is not re-installed because rpm name of package A is not changed.
* This option can add build count into package release while building package, so the rpm name of package will be different from previous build.

Change-Id: I5e7c785b9b72de5b39f848437979631200c5e922
Signed-off-by: wanchao-xu <wanchao.xu@samsung.com>